*2026/01/16 10:37:58.74 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 00:06:14.000 END TIME : UTC 2025/07/23 00:06:39.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 127 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 38.03 2 Depth metres 0.15 37.84 3 Temperature 'deg C (ITS90)' 8.737 17.512 4 Conductivity S/m 3.44521 4.0225 5 Conductance:Specific S/m 4.71605 5.10595 6 Salinity PSS-78 30.35 32.41 7 Speed:Sound m/s 1482.67 1509.31 8 Density kg/m^3 1021.929 1025.306 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F R4 2 2 -99 ' ' 7 F R4 2 3 -99 ' ' 8 F R4 3 4 -99 ' ' 10 F R4 5 5 -99 ' ' 10 F R4 5 6 -99 ' ' 7 F R4 2 7 -99 ' ' 8 F R4 2 8 -99 ' ' 9 F R4 3 $END *ADMINISTRATION MISSION : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 234 LATITUDE : 49 43.24540 N ! (deg min) LONGITUDE : 126 37.91230 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_000614 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 127 127 MERGEHDR 1.3 2026/01/16 10:35:48 127 127 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 127 127 CALIB 12.1 2026/01/16 10:37:22 127 127 CLEAN 5.3 2026/01/16 10:37:58 127 127 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 Applied edit header: C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\castaway2023_HDR.txt Channel 2: Depth [metres] Format: F10.6 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F14.6 ==> F8.3 Channel 4: Conductivity [mS/cm] Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 5: Conductance:Specific [mS/cm] Name: Specific Conductance ==> Conductance:Specific Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F14.6 ==> F7.2 Channel 7: Speed:Sound [m/s] Name: Sound Velocity ==> Speed:Sound Format: F14.6 ==> F8.2 Channel 8: Density [kg/m^3] Format: F14.6 ==> F9.3 -REMOVECH 2026/01/16 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\recal-cond.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 4 Conductivity S/m 10 0.0000000E+00 0.1000000E-03 5 Conductance:Specific S/m 10 0.0000000E+00 0.1000000E-03 -CLEAN functions: 2026/01/16 10:37:42 20 Reset #RECS, MIN & MAX values in header. Set header Start and End times from the data. $END *COMMENTS Data Processing Notes: The CastAway-CTD is a small profiling instrument that measures conductivity, temperature, and pressure. Its embedded firmware controls all of the instrument's functions. It is designed for profiling to depths of up to 100m at 5 Hz. It uses a six electrode flow-through conductivity cell with zero external field coupled with a rapid response thermistor (<5Hz) to attain high measurement accuracies. The instrument does not require a pump and is hydrodynamically designed to free fall rate of 1 m/s. Processing was done using the CastAway CTD data processing system which included the following steps: - Pressure correction to remove ambient atmospheric pressure. - Removal of records obtained while the system was stationary. - De-spiking of conductivity data to remove erratic measurements near the water surface that can be caused by air bubbles trapped in the conductivity flow cell. - Bin-averaging with 0.3db bins with linear interpolation used to fill empty bins or the nearest available value for surface or bottom bins. - Combination of downcast and upcast data using a weighted average based on fall velocity. - Derivation of specific conductance, salinity, sound speed, density and depth for each pressure bin. The data were converted to IOS Header format. Calibration dates were taken from the original data file header: % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2020-03-13 % Temperature calibration date,2020-03-12 % Pressure calibration date,2020-03-04 % *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ----- ---- ------ ------------ Conductivity S/m 10 -99 () (0 0.1E-03) Conductance:Specific S/m 10 -99 () (0 0.1E-03) $END !--1--- --2--- ---3--- ----4---- ----5---- --6--- ---7--- ---8---- !Pressu Depth Tempera Conductiv Conductan Salini Speed: Density !re ture ity ce: ty Sound ! Specific !------ ------ ------- --------- --------- ------ ------- -------- *END OF HEADER 0.15 0.15 17.512 4.02250 4.73097 30.57 1509.31 1021.997 0.45 0.45 17.447 4.00368 4.71605 30.46 1508.99 1021.929 0.75 0.75 17.376 4.00467 4.72514 30.52 1508.85 1021.994 1.05 1.05 17.337 4.00487 4.72974 30.55 1508.77 1022.028 1.35 1.35 17.332 4.00440 4.72980 30.55 1508.76 1022.031 1.65 1.65 17.327 4.00561 4.73174 30.56 1508.77 1022.044 1.95 1.94 17.324 4.00717 4.73396 30.58 1508.78 1022.058 2.25 2.24 17.319 4.00542 4.73244 30.57 1508.76 1022.052 2.55 2.54 17.316 4.00653 4.73402 30.58 1508.77 1022.062 2.85 2.84 17.297 4.00631 4.73591 30.59 1508.73 1022.078 3.15 3.14 17.260 4.00643 4.74019 30.62 1508.66 1022.110 3.45 3.44 17.228 4.00045 4.73669 30.59 1508.54 1022.098 3.75 3.74 17.197 3.99809 4.73741 30.60 1508.45 1022.109 4.05 4.04 17.174 3.99412 4.73525 30.58 1508.37 1022.103 4.35 4.34 17.125 3.99042 4.73640 30.58 1508.23 1022.120 4.65 4.64 17.092 3.98800 4.73727 30.59 1508.14 1022.132 4.95 4.94 17.076 3.98713 4.73807 30.59 1508.10 1022.141 5.25 5.24 17.065 3.98663 4.73871 30.60 1508.08 1022.148 5.55 5.54 17.036 3.98592 4.74113 30.61 1508.01 1022.168 5.85 5.83 17.001 3.98192 4.74026 30.61 1507.90 1022.171 6.15 6.13 16.939 3.98040 4.74550 30.64 1507.76 1022.213 6.45 6.43 16.722 3.97797 4.76722 30.78 1507.27 1022.375 6.75 6.73 16.402 3.96756 4.79146 30.94 1506.47 1022.568 7.05 7.03 15.196 3.91473 4.86960 31.43 1503.25 1023.208 7.35 7.33 14.562 3.81548 4.82212 31.04 1500.78 1023.047 7.65 7.63 14.502 3.80090 4.81096 30.96 1500.49 1022.995 7.95 7.93 14.394 3.73271 4.73764 30.42 1499.53 1022.609 8.25 8.23 13.900 3.68217 4.73289 30.35 1497.83 1022.656 8.55 8.53 13.191 3.65137 4.78044 30.63 1495.81 1023.014 8.85 8.82 12.752 3.64742 4.83080 30.95 1494.71 1023.347 9.15 9.12 12.357 3.64745 4.88187 31.28 1493.76 1023.676 9.45 9.42 12.108 3.64553 4.91200 31.47 1493.14 1023.871 9.75 9.72 11.941 3.64582 4.93462 31.61 1492.74 1024.015 10.05 10.02 11.775 3.64071 4.95004 31.70 1492.28 1024.118 10.35 10.32 11.664 3.63573 4.95812 31.75 1491.95 1024.175 10.65 10.62 11.542 3.61728 4.94955 31.68 1491.44 1024.141 10.95 10.91 11.363 3.59849 4.94804 31.65 1490.79 1024.151 11.25 11.21 11.232 3.58147 4.94235 31.59 1490.27 1024.133 11.55 11.51 11.098 3.57757 4.95534 31.67 1489.89 1024.217 11.85 11.81 10.974 3.57348 4.96669 31.73 1489.54 1024.292 12.15 12.11 10.882 3.56879 4.97301 31.77 1489.26 1024.336 12.45 12.41 10.831 3.56727 4.97787 31.80 1489.12 1024.368 12.75 12.71 10.793 3.56421 4.97892 31.80 1488.99 1024.378 13.05 13.00 10.722 3.55814 4.98036 31.80 1488.74 1024.393 13.35 13.30 10.649 3.55382 4.98448 31.82 1488.51 1024.423 13.65 13.60 10.610 3.55357 4.98962 31.85 1488.42 1024.456 13.95 13.90 10.582 3.55333 4.99314 31.87 1488.35 1024.478 14.25 14.20 10.564 3.55309 4.99529 31.89 1488.31 1024.493 14.55 14.50 10.547 3.55215 4.99644 31.89 1488.26 1024.502 14.85 14.80 10.532 3.55045 4.99612 31.89 1488.20 1024.502 15.15 15.09 10.498 3.54847 4.99813 31.90 1488.10 1024.517 15.45 15.39 10.474 3.54695 4.99940 31.90 1488.02 1024.527 15.75 15.69 10.458 3.54502 4.99892 31.90 1487.97 1024.527 16.05 15.99 10.426 3.54304 5.00059 31.91 1487.87 1024.540 16.35 16.29 10.392 3.54029 5.00157 31.91 1487.75 1024.549 16.65 16.59 10.355 3.53864 5.00442 31.93 1487.64 1024.569 16.95 16.88 10.324 3.53663 5.00603 31.93 1487.55 1024.581 17.25 17.18 10.281 3.53502 5.00985 31.95 1487.42 1024.607 17.55 17.48 10.242 3.53296 5.01237 31.97 1487.30 1024.624 17.85 17.78 10.219 3.53105 5.01292 31.97 1487.23 1024.630 18.15 18.08 10.206 3.52787 5.01036 31.95 1487.16 1024.618 18.45 18.38 10.185 3.52441 5.00846 31.93 1487.07 1024.611 18.75 18.68 10.134 3.52303 5.01374 31.96 1486.93 1024.644 19.05 18.97 10.085 3.51998 5.01643 31.98 1486.77 1024.664 19.35 19.27 10.054 3.51777 5.01757 31.98 1486.67 1024.673 19.65 19.57 10.017 3.51530 5.01948 31.99 1486.55 1024.688 19.95 19.87 9.972 3.51317 5.02281 32.01 1486.41 1024.710 20.25 20.17 9.939 3.51048 5.02376 32.01 1486.30 1024.719 20.55 20.47 9.906 3.50904 5.02642 32.02 1486.20 1024.737 20.85 20.76 9.871 3.50599 5.02716 32.02 1486.08 1024.744 21.15 21.06 9.840 3.50515 5.03033 32.04 1486.00 1024.765 21.45 21.36 9.812 3.50365 5.03219 32.05 1485.91 1024.778 21.75 21.66 9.784 3.50112 5.03265 32.05 1485.81 1024.783 22.05 21.96 9.748 3.49947 5.03549 32.06 1485.71 1024.802 22.35 22.26 9.727 3.49869 5.03747 32.08 1485.65 1024.816 22.65 22.55 9.714 3.49842 5.03887 32.08 1485.62 1024.826 22.95 22.85 9.697 3.49829 5.04114 32.10 1485.58 1024.840 23.25 23.15 9.678 3.49734 5.04257 32.10 1485.52 1024.851 23.55 23.45 9.655 3.49678 5.04516 32.12 1485.46 1024.867 23.85 23.75 9.638 3.49663 5.04735 32.13 1485.42 1024.882 24.15 24.05 9.617 3.49236 5.04426 32.11 1485.32 1024.867 24.45 24.35 9.578 3.49061 5.04744 32.12 1485.20 1024.888 24.75 24.64 9.535 3.48918 5.05166 32.15 1485.08 1024.915 25.05 24.94 9.503 3.48741 5.05381 32.16 1484.98 1024.930 25.35 25.24 9.466 3.48364 5.05374 32.15 1484.84 1024.932 25.65 25.54 9.425 3.48076 5.05556 32.16 1484.70 1024.946 25.95 25.84 9.390 3.47968 5.05913 32.18 1484.60 1024.969 26.25 26.14 9.350 3.47782 5.06228 32.20 1484.48 1024.989 26.55 26.43 9.316 3.47664 5.06562 32.22 1484.38 1025.011 26.85 26.73 9.291 3.47616 5.06860 32.23 1484.32 1025.030 27.15 27.03 9.271 3.47403 5.06844 32.23 1484.25 1025.031 27.45 27.33 9.253 3.47128 5.06709 32.22 1484.17 1025.026 27.75 27.63 9.222 3.47007 5.06998 32.23 1484.08 1025.044 28.05 27.93 9.192 3.46903 5.07282 32.25 1483.99 1025.062 28.35 28.22 9.178 3.46923 5.07528 32.26 1483.96 1025.078 28.65 28.52 9.170 3.46786 5.07441 32.26 1483.93 1025.075 28.95 28.82 9.151 3.46683 5.07572 32.26 1483.87 1025.084 29.25 29.12 9.128 3.46585 5.07780 32.27 1483.80 1025.098 29.55 29.42 9.114 3.46547 5.07930 32.28 1483.77 1025.108 29.85 29.72 9.107 3.46466 5.07903 32.28 1483.75 1025.108 30.15 30.01 9.093 3.46334 5.07927 32.28 1483.70 1025.111 30.45 30.31 9.069 3.46330 5.08277 32.30 1483.64 1025.133 30.75 30.61 9.053 3.46185 5.08299 32.30 1483.58 1025.136 31.05 30.91 9.043 3.46171 5.08439 32.31 1483.56 1025.146 31.35 31.21 9.030 3.46102 5.08527 32.31 1483.52 1025.152 31.65 31.51 9.012 3.46051 5.08719 32.32 1483.47 1025.165 31.95 31.80 8.996 3.45928 5.08785 32.32 1483.42 1025.170 32.25 32.10 8.985 3.45857 5.08838 32.33 1483.39 1025.175 32.55 32.40 8.972 3.45782 5.08930 32.33 1483.35 1025.182 32.85 32.70 8.960 3.45733 5.09036 32.34 1483.32 1025.189 33.15 33.00 8.952 3.45728 5.09143 32.34 1483.30 1025.197 33.45 33.29 8.953 3.45706 5.09088 32.34 1483.31 1025.195 33.75 33.59 8.941 3.45676 5.09232 32.35 1483.28 1025.205 34.05 33.89 8.941 3.45617 5.09150 32.34 1483.27 1025.202 34.35 34.19 8.939 3.45606 5.09165 32.34 1483.27 1025.204 34.65 34.49 8.975 3.46163 5.09441 32.37 1483.44 1025.219 34.95 34.79 8.994 3.45598 5.08318 32.29 1483.42 1025.157 35.25 35.08 8.955 3.45621 5.08946 32.33 1483.33 1025.195 35.55 35.38 8.935 3.45556 5.09143 32.34 1483.27 1025.208 35.85 35.68 8.925 3.45553 5.09289 32.35 1483.25 1025.217 36.15 35.98 8.918 3.45466 5.09262 32.34 1483.23 1025.217 36.45 36.28 8.912 3.45480 5.09378 32.35 1483.22 1025.225 36.75 36.58 8.906 3.45342 5.09267 32.34 1483.19 1025.221 37.05 36.87 8.884 3.45188 5.09366 32.35 1483.12 1025.228 37.35 37.17 8.847 3.44937 5.09558 32.35 1482.99 1025.242 37.65 37.47 8.763 3.44540 5.10238 32.39 1482.73 1025.283 38.03 37.84 8.737 3.44521 5.10595 32.41 1482.67 1025.306